热门
Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes
文献类型：期刊论文
| 作者 | Cornelissen, Johannes H. C.; van Bodegom, Peter M.; Aerts, Rien; Callaghan, Terry V.; van Logtestijn, Richard S. P.; Alatalo, Juha; Chapin, F. Stuart; Gerdol, Renato; Gudmundsson, Jon; Gwynn-Jones, Dylan |
| 刊名 | ecology letters
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 10期号:7页码:619-627 |
| 关键词 | alpine carbon circum-arctic global change growth form litter turnover mass loss vegetation change |
| 合作状况 | 其它 |
| 中文摘要 | whether climate change will turn cold biomes from large long-term carbon sinks into sources is hotly debated because of the great potential for ecosystem-mediated feedbacks to global climate. critical are the direction, magnitude and generality of climate responses of plant litter decomposition. here, we present the first quantitative analysis of the major climate-change-related drivers of litter decomposition rates in cold northern biomes worldwide. leaf litters collected from the predominant species in 33 global change manipulation experiments in circum-arctic-alpine ecosystems were incubated simultaneously in two contrasting arctic life zones. we demonstrate that longer-term, large-scale changes to leaf litter decomposition will be driven primarily by both direct warming effects and concomitant shifts in plant growth form composition, with a much smaller role for changes in litter quality within species. specifically, the ongoing warming-induced expansion of shrubs with recalcitrant leaf litter across cold biomes would constitute a negative feedback to global warming. depending on the strength of other (previously reported) positive feedbacks of shrub expansion on soil carbon turnover, this may partly counteract direct warming enhancement of litter decomposition. |
| 英文摘要 | whether climate change will turn cold biomes from large long-term carbon sinks into sources is hotly debated because of the great potential for ecosystem-mediated feedbacks to global climate. critical are the direction, magnitude and generality of climate responses of plant litter decomposition. here, we present the first quantitative analysis of the major climate-change-related drivers of litter decomposition rates in cold northern biomes worldwide. leaf litters collected from the predominant species in 33 global change manipulation experiments in circum-arctic-alpine ecosystems were incubated simultaneously in two contrasting arctic life zones. we demonstrate that longer-term, large-scale changes to leaf litter decomposition will be driven primarily by both direct warming effects and concomitant shifts in plant growth form composition, with a much smaller role for changes in litter quality within species. specifically, the ongoing warming-induced expansion of shrubs with recalcitrant leaf litter across cold biomes would constitute a negative feedback to global warming. depending on the strength of other (previously reported) positive feedbacks of shrub expansion on soil carbon turnover, this may partly counteract direct warming enhancement of litter decomposition. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 生物科学 |
| 类目[WOS] | ecology |
| 研究领域[WOS] | environmental sciences & ecology |
| 关键词[WOS] | arctic tundra ; plant community ; soil respiration ; carbon storage ; ecosystem ; term ; co2 ; sensitivity ; quality ; alaska |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247123900008 |
| 公开日期 | 2009-12-07 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1275]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Vrije Univ Amsterdam, Dept Syst Ecol, Fac Earth & Life Sci, Inst Ecol Sci, NL-1081 HV Amsterdam, Netherlands 2.Royal Swedish Acad Sci, Abisko Res Stn, S-98107 Abisko, Sweden 3.Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England 4.Swedish Govt Agcy Innovat Syst, VINNOVA, SE-10158 Stockholm, Sweden 5.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK 99775 USA 6.Univ Ferrara, Dipartimento Risorse Nat & Culturali, I-44100 Ferrara, Italy 7.Agr Univ Iceland, IS-112 Reykjavik, Iceland 8.Univ Wales, Inst Biol Sci, Aberystwyth SY23 3DA, Dyfed, Wales 9.Florida Int Univ, Dept Environm Studies, Miami, FL 33199 USA 10.Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada |
| 推荐引用方式 GB/T 7714 | Cornelissen, Johannes H. C.,van Bodegom, Peter M.,Aerts, Rien,et al. Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes[J]. ecology letters,2007,10(7):619-627. |
| APA | Cornelissen, Johannes H. C..,van Bodegom, Peter M..,Aerts, Rien.,Callaghan, Terry V..,van Logtestijn, Richard S. P..,...&M O L Team.(2007).Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes.ecology letters,10(7),619-627. |
| MLA | Cornelissen, Johannes H. C.,et al."Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes".ecology letters 10.7(2007):619-627. |
入库方式： OAI收割
来源：西北高原生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。